simgear/scene/model/modellib.cxx

   1 // Copyright (C) 2008 Till Busch buti@bux.at
   2 //
   3 // This program is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU General Public License as
   5 // published by the Free Software Foundation; either version 2 of the
   6 // License, or (at your option) any later version.
   7 //
   8 // This program is distributed in the hope that it will be useful, but
   9 // WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU General Public License
  14 // along with this program; if not, write to the Free Software
  15 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  16 //
  17
  18 #ifdef HAVE_CONFIG_H
  19 #  include <simgear_config.h>
  20 #endif
  21
  22 #include <boost/algorithm/string.hpp>
  23
  24 #include <osgDB/ReadFile>
  25 #include <osgDB/WriteFile>
  26 #include <osgDB/Registry>
  27
  28 #include <simgear/constants.h>
  29 #include <simgear/props/props.hxx>
  30 #include <simgear/props/props_io.hxx>
  31 #include <simgear/scene/model/model.hxx>
  32 #include <simgear/scene/model/ModelRegistry.hxx>
  33
  34 #include "SGPagedLOD.hxx"
  35 #include "SGReaderWriterXML.hxx"
  36 #include "SGReaderWriterXMLOptions.hxx"
  37
  38 #include "modellib.hxx"
  39
  40 #include <simgear/math/SGMath.hxx>
  41
  42
  43 using namespace simgear;
  44
  45 osgDB::RegisterReaderWriterProxy<SGReaderWriterXML> g_readerWriter_XML_Proxy;
  46 ModelRegistryCallbackProxy<LoadOnlyCallback> g_xmlCallbackProxy("xml");
  47
  48 \f
  49 ////////////////////////////////////////////////////////////////////////
  50 // Implementation of SGModelLib.
  51 ////////////////////////////////////////////////////////////////////////
  52 void SGModelLib::init(const string &root_dir)
  53 {
  54     osgDB::Registry::instance()->getDataFilePathList().push_front(root_dir);
  55 }
  56
  57 SGModelLib::SGModelLib()
  58 {
  59 }
  60
  61 SGModelLib::~SGModelLib()
  62 {
  63 }
  64
  65 namespace
  66 {
  67 osg::Node* loadFile(const string& path, osgDB::ReaderWriter::Options* options)
  68 {
  69     using namespace osg;
  70     using namespace osgDB;
  71     ref_ptr<Node> model = readRefNodeFile(path, options);
  72     if (!model)
  73         return 0;
  74     if (boost::iends_with(path, ".ac")) {
  75         ref_ptr<SGReaderWriterXMLOptions> sgOptions;
  76         if (options)
  77             sgOptions = new SGReaderWriterXMLOptions(*options);
  78         model = instantiateEffects(model.get(), sgOptions.get());
  79     }
  80      return model.release();
  81 }
  82 }
  83
  84 osg::Node*
  85 SGModelLib::loadModel(const string &path,
  86                        SGPropertyNode *prop_root,
  87                        SGModelData *data)
  88 {
  89     osg::ref_ptr<SGReaderWriterXMLOptions> opt = new SGReaderWriterXMLOptions(*(osgDB::Registry::instance()->getOptions()));
  90     opt->setPropRoot(prop_root);
  91     opt->setModelData(data);
  92     osg::Node *n = loadFile(path, opt.get());
  93     if (n && n->getName().empty())
  94         n->setName("Direct loaded model \"" + path + "\"");
  95     return n;
  96
  97 }
  98
  99 osg::Node*
 100 SGModelLib::loadModel(const string &path,
 101                                 SGPropertyNode *prop_root,
 102                                 panel_func pf)
 103 {
 104     osg::ref_ptr<SGReaderWriterXMLOptions> opt = new SGReaderWriterXMLOptions(*(osgDB::Registry::instance()->getOptions()));
 105     opt->setPropRoot(prop_root);
 106     opt->setLoadPanel(pf);
 107     return loadFile(path, opt.get());
 108 }
 109
 110 osg::Node*
 111 SGModelLib::loadPagedModel(const string &path,
 112                            SGPropertyNode *prop_root,
 113                            SGModelData *data)
 114 {
 115     SGPagedLOD *plod = new SGPagedLOD;
 116     plod->setName("Paged LOD for \"" + path + "\"");
 117     plod->setFileName(0, path);
 118     plod->setRange(0, 0.0, 50.0*SG_NM_TO_METER);
 119
 120     osg::ref_ptr<SGReaderWriterXMLOptions> opt = new SGReaderWriterXMLOptions(*(osgDB::Registry::instance()->getOptions()));
 121     opt->setPropRoot(prop_root);
 122     opt->setModelData(data);
 123     plod->setReaderWriterOptions(opt.get());
 124     return plod;
 125 }
 126
 127 // end of modellib.cxx